package org.linlinjava.litemall.wx.service;

import com.github.binarywang.wxpay.bean.notify.WxPayNotifyResponse;
import com.github.binarywang.wxpay.bean.notify.WxPayOrderNotifyResult;
import com.github.binarywang.wxpay.bean.order.WxPayMpOrderResult;
import com.github.binarywang.wxpay.bean.order.WxPayMwebOrderResult;
import com.github.binarywang.wxpay.bean.request.WxPayUnifiedOrderRequest;
import com.github.binarywang.wxpay.bean.result.BaseWxPayResult;
import com.github.binarywang.wxpay.constant.WxPayConstants;
import com.github.binarywang.wxpay.exception.WxPayException;
import com.github.binarywang.wxpay.service.WxPayService;
import com.google.common.collect.Maps;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.linlinjava.litemall.core.cache.RemoteCacheService;
import org.linlinjava.litemall.core.express.ExpressService;
import org.linlinjava.litemall.core.express.dao.ExpressInfo;
import org.linlinjava.litemall.core.notify.NotifyService;
import org.linlinjava.litemall.core.notify.NotifyType;
import org.linlinjava.litemall.core.qcode.QCodeService;
import org.linlinjava.litemall.core.system.SystemConfig;
import org.linlinjava.litemall.core.task.TaskService;
import org.linlinjava.litemall.core.util.CommonUtils;
import org.linlinjava.litemall.core.util.*;
import org.linlinjava.litemall.db.domain.*;
import org.linlinjava.litemall.db.service.*;
import org.linlinjava.litemall.db.util.*;
import org.linlinjava.litemall.wx.task.ActivityOrderUnpaidTask;
import org.linlinjava.litemall.wx.task.OrderUnpaidTask;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.Assert;
import org.springframework.util.CollectionUtils;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.ValidationException;
import java.io.IOException;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.*;

import static org.linlinjava.litemall.wx.util.WxResponseCode.*;

/**
 * 订单服务
 * <p>
 * <p>
 * 订单状态：
 * 101 订单生成，未支付；102，下单后未支付用户取消；103，下单后未支付超时系统自动取消
 * 201 支付完成，商家未发货；202，订单生产，已付款未发货，但是退款取消；
 * 301 商家发货，用户未确认；
 * 401 用户确认收货； 402 用户没有确认收货超过一定时间，系统自动确认收货；
 * <p>
 * <p>
 * 用户操作：
 * 当101用户未付款时，此时用户可以进行的操作是取消订单，或者付款操作
 * 当201支付完成而商家未发货时，此时用户可以取消订单并申请退款
 * 当301商家已发货时，此时用户可以有确认收货的操作
 * 当401用户确认收货以后，此时用户可以进行的操作是删除订单，评价商品，申请售后，或者再次购买
 * 当402系统自动确认收货以后，此时用户可以删除订单，评价商品，申请售后，或者再次购买
 */
@Service
public class WxOrderService {
    private final Log logger = LogFactory.getLog(WxOrderService.class);

    @Autowired
    private LitemallUserService userService;
    @Autowired
    private LitemallOrderService orderService;
    @Autowired
    private LitemallOrderGoodsService orderGoodsService;
    @Autowired
    private LitemallAddressService addressService;
    @Autowired
    private LitemallCartService cartService;
    @Autowired
    private LitemallRegionService regionService;
    @Autowired
    private LitemallGoodsProductService productService;
    @Autowired
    private WxPayService wxPayService;
    @Autowired
    private NotifyService notifyService;
    @Autowired
    private LitemallGrouponRulesService grouponRulesService;
    @Autowired
    private LitemallGrouponService grouponService;
    @Autowired
    private QCodeService qCodeService;
    @Autowired
    private ExpressService expressService;
    @Autowired
    private LitemallCommentService commentService;
    @Autowired
    private LitemallCouponService couponService;
    @Autowired
    private LitemallCouponUserService couponUserService;
    @Autowired
    private CouponVerifyService couponVerifyService;
    @Autowired
    private TaskService taskService;
    @Autowired
    private LitemallAftersaleService aftersaleService;
    @Autowired
    private ActivityGrouponService activityGrouponService;
    @Autowired
    private LitemallActivityService activityService;
    @Autowired
    private LitemallActivityRulesService rulesService;
    @Autowired
    private TransNoGenerator noGenerator;
    @Autowired
    private RemoteCacheService remoteCacheService;


    /**
     * 订单列表
     *
     * @param userId   用户ID
     * @param showType 订单信息：
     *                 0，全部订单；
     *                 1，待付款；
     *                 2，待发货；
     *                 3，待收货；
     *                 4，待评价。
     * @param page     分页页数
     * @param limit    分页大小
     * @return 订单列表
     */
    public Object list(Integer userId, Integer showType, Integer page, Integer limit, String sort, String order) {
        if (userId == null) {
            return ResponseUtil.unlogin();
        }

        List<Short> orderStatus = OrderUtil.orderStatus(showType);
        List<LitemallOrder> orderList = orderService.queryByOrderStatus(userId, orderStatus, page, limit, sort, order);

        List<Map<String, Object>> orderVoList = new ArrayList<>(orderList.size());
        for (LitemallOrder o : orderList) {
            Map<String, Object> orderVo = new HashMap<>();
            orderVo.put("id", o.getId());
            orderVo.put("orderSn", o.getOrderSn());
            orderVo.put("actualPrice", o.getActualPrice());
            orderVo.put("orderStatusText", OrderUtil.orderStatusText(o));
            orderVo.put("handleOption", OrderUtil.build(o));
            orderVo.put("aftersaleStatus", o.getAftersaleStatus());

            LitemallGroupon groupon = grouponService.queryByOrderId(o.getId());
            if (groupon != null) {
                orderVo.put("isGroupin", true);
            } else {
                orderVo.put("isGroupin", false);
            }

            List<LitemallOrderGoods> orderGoodsList = orderGoodsService.queryByOid(o.getId());
            List<Map<String, Object>> orderGoodsVoList = new ArrayList<>(orderGoodsList.size());
            for (LitemallOrderGoods orderGoods : orderGoodsList) {
                Map<String, Object> orderGoodsVo = new HashMap<>();
                orderGoodsVo.put("id", orderGoods.getId());
                orderGoodsVo.put("goodsName", orderGoods.getGoodsName());
                orderGoodsVo.put("number", orderGoods.getNumber());
                orderGoodsVo.put("picUrl", orderGoods.getPicUrl());
                orderGoodsVo.put("specifications", orderGoods.getSpecifications());
                orderGoodsVo.put("price", orderGoods.getPrice());
                orderGoodsVoList.add(orderGoodsVo);
            }
            orderVo.put("goodsList", orderGoodsVoList);

            orderVoList.add(orderVo);
        }

        return ResponseUtil.okList(orderVoList, orderList);
    }

    /**
     * 订单详情
     *
     * @param userId  用户ID
     * @param orderId 订单ID
     * @return 订单详情
     */
    public Object detail(Integer userId, Integer orderId) {
        if (userId == null) {
            return ResponseUtil.unlogin();
        }

        // 订单信息
        LitemallOrder order = orderService.findById(userId, orderId);
        if (null == order) {
            return ResponseUtil.fail(ORDER_UNKNOWN, "订单不存在");
        }
        if (!order.getUserId().equals(userId)) {
            return ResponseUtil.fail(ORDER_INVALID, "不是当前用户的订单");
        }
        Map<String, Object> orderVo = new HashMap<String, Object>();
        orderVo.put("id", order.getId());
        orderVo.put("orderSn", order.getOrderSn());
        orderVo.put("message", order.getMessage());
        orderVo.put("addTime", order.getAddTime());
        orderVo.put("consignee", order.getConsignee());
        orderVo.put("mobile", order.getMobile());
        orderVo.put("address", order.getAddress());
        orderVo.put("goodsPrice", order.getGoodsPrice());
        orderVo.put("couponPrice", order.getCouponPrice());
        orderVo.put("freightPrice", order.getFreightPrice());
        orderVo.put("actualPrice", order.getActualPrice());
        orderVo.put("orderStatusText", OrderUtil.orderStatusText(order));
        orderVo.put("handleOption", OrderUtil.build(order));
        orderVo.put("aftersaleStatus", order.getAftersaleStatus());
        orderVo.put("expCode", order.getShipChannel());
        orderVo.put("expName", expressService.getVendorName(order.getShipChannel()));
        orderVo.put("expNo", order.getShipSn());

        List<LitemallOrderGoods> orderGoodsList = orderGoodsService.queryByOid(order.getId());

        Map<String, Object> result = new HashMap<>();
        result.put("orderInfo", orderVo);
        result.put("orderGoods", orderGoodsList);

        // 订单状态为已发货且物流信息不为空
        //"YTO", "800669400640887922"
        if (order.getOrderStatus().equals(OrderUtil.STATUS_SHIP)) {
            ExpressInfo ei = expressService.getExpressInfo(order.getShipChannel(), order.getShipSn());
            if (ei == null) {
                result.put("expressInfo", new ArrayList<>());
            } else {
                result.put("expressInfo", ei);
            }
        } else {
            result.put("expressInfo", new ArrayList<>());
        }

        return ResponseUtil.ok(result);

    }

    /**
     * 提交订单
     * <p>
     * 1. 创建订单表项和订单商品表项;
     * 2. 购物车清空;
     * 3. 优惠券设置已用;
     * 4. 商品货品库存减少;
     * 5. 如果是团购商品，则创建团购活动表项。
     *
     * @param userId 用户ID
     * @param body   订单信息，{ cartId：xxx, addressId: xxx, couponId: xxx, message: xxx, grouponRulesId: xxx,  grouponLinkId: xxx}
     * @return 提交订单操作结果
     */
    @Transactional
    public Object submit(Integer userId, String body) {
        if (userId == null) {
            return ResponseUtil.unlogin();
        }
        if (body == null) {
            return ResponseUtil.badArgument();
        }
        Integer cartId = JacksonUtil.parseInteger(body, "cartId");
        Integer addressId = JacksonUtil.parseInteger(body, "addressId");
        Integer couponId = JacksonUtil.parseInteger(body, "couponId");
        Integer userCouponId = JacksonUtil.parseInteger(body, "userCouponId");
        String message = JacksonUtil.parseString(body, "message");
        Integer grouponRulesId = JacksonUtil.parseInteger(body, "grouponRulesId");
        Integer grouponLinkId = JacksonUtil.parseInteger(body, "grouponLinkId");

        //如果是团购项目,验证活动是否有效
        if (grouponRulesId != null && grouponRulesId > 0) {
            LitemallGrouponRules rules = grouponRulesService.findById(grouponRulesId);
            //找不到记录
            if (rules == null) {
                return ResponseUtil.badArgument();
            }
            //团购规则已经过期
            if (rules.getStatus().equals(GrouponConstant.RULE_STATUS_DOWN_EXPIRE)) {
                return ResponseUtil.fail(GROUPON_EXPIRED, "团购已过期!");
            }
            //团购规则已经下线
            if (rules.getStatus().equals(GrouponConstant.RULE_STATUS_DOWN_ADMIN)) {
                return ResponseUtil.fail(GROUPON_OFFLINE, "团购已下线!");
            }

            if (grouponLinkId != null && grouponLinkId > 0) {
                //团购人数已满
                if (grouponService.countGroupon(grouponLinkId) >= (rules.getDiscountMember() - 1)) {
                    return ResponseUtil.fail(GROUPON_FULL, "团购活动人数已满!");
                }
                // NOTE
                // 这里业务方面允许用户多次开团，以及多次参团，
                // 但是会限制以下两点：
                // （1）不允许参加已经加入的团购
                if (grouponService.hasJoin(userId, grouponLinkId)) {
                    return ResponseUtil.fail(GROUPON_JOIN, "团购活动已经参加!");
                }
                // （2）不允许参加自己开团的团购
                LitemallGroupon groupon = grouponService.queryById(userId, grouponLinkId);
                // if(groupon.getCreatorUserId().equals(userId)){
                //     return ResponseUtil.fail(GROUPON_JOIN, "团购活动已经参加!");
                // }
                if (groupon != null) {
                    if (groupon.getCreatorUserId().equals(userId)) {
                        return ResponseUtil.fail(GROUPON_JOIN, "团购活动已经参加!");
                    }
                }
            }
        }

        if (cartId == null || addressId == null || couponId == null) {
            return ResponseUtil.badArgument();
        }

        // 收货地址
        LitemallAddress checkedAddress = addressService.query(userId, addressId);
        if (checkedAddress == null) {
            return ResponseUtil.badArgument();
        }

        // 团购优惠
        BigDecimal grouponPrice = new BigDecimal(0);
        LitemallGrouponRules grouponRules = grouponRulesService.findById(grouponRulesId);
        if (grouponRules != null) {
            grouponPrice = grouponRules.getDiscount();
        }

        // 货品价格
        List<LitemallCart> checkedGoodsList = null;
        if (cartId.equals(0)) {
            checkedGoodsList = cartService.queryByUidAndChecked(userId);
        } else {
            LitemallCart cart = cartService.findById(cartId);
            checkedGoodsList = new ArrayList<>(1);
            checkedGoodsList.add(cart);
        }
        if (checkedGoodsList.size() == 0) {
            return ResponseUtil.badArgumentValue();
        }
        BigDecimal checkedGoodsPrice = new BigDecimal(0);
        for (LitemallCart checkGoods : checkedGoodsList) {
            //  只有当团购规格商品ID符合才进行团购优惠
            if (grouponRules != null && grouponRules.getGoodsId().equals(checkGoods.getGoodsId())) {
                checkedGoodsPrice = checkedGoodsPrice.add(checkGoods.getPrice().subtract(grouponPrice).multiply(new BigDecimal(checkGoods.getNumber())));
            } else {
                checkedGoodsPrice = checkedGoodsPrice.add(checkGoods.getPrice().multiply(new BigDecimal(checkGoods.getNumber())));
            }
        }

        // 获取可用的优惠券信息
        // 使用优惠券减免的金额
        BigDecimal couponPrice = new BigDecimal(0);
        // 如果couponId=0则没有优惠券，couponId=-1则不使用优惠券
        if (couponId != 0 && couponId != -1) {
            LitemallCoupon coupon = couponVerifyService.checkCoupon(userId, couponId, userCouponId, checkedGoodsPrice, checkedGoodsList);
            if (coupon == null) {
                return ResponseUtil.badArgumentValue();
            }
            couponPrice = coupon.getDiscount();
        }


        // 根据订单商品总价计算运费，满足条件（例如88元）则免运费，否则需要支付运费（例如8元）；
        BigDecimal freightPrice = new BigDecimal(0);
        if (checkedGoodsPrice.compareTo(SystemConfig.getFreightLimit()) < 0) {
            freightPrice = SystemConfig.getFreight();
        }

        // 可以使用的其他钱，例如用户积分
        BigDecimal integralPrice = new BigDecimal(0);

        // 订单费用
        BigDecimal orderTotalPrice = checkedGoodsPrice.add(freightPrice).subtract(couponPrice).max(new BigDecimal(0));
        // 最终支付费用
        BigDecimal actualPrice = orderTotalPrice.subtract(integralPrice);

        Integer orderId = null;
        LitemallOrder order = null;
        // 订单
        order = new LitemallOrder();
        order.setUserId(userId);
        order.setOrderSn(orderService.generateOrderSn(userId));
        order.setOrderStatus(OrderUtil.STATUS_CREATE);
        order.setConsignee(checkedAddress.getName());
        order.setMobile(checkedAddress.getTel());
        order.setMessage(message);
        String detailedAddress = checkedAddress.getProvince() + checkedAddress.getCity() + checkedAddress.getCounty() + " " + checkedAddress.getAddressDetail();
        order.setAddress(detailedAddress);
        order.setGoodsPrice(checkedGoodsPrice);
        order.setFreightPrice(freightPrice);
        order.setCouponPrice(couponPrice);
        order.setIntegralPrice(integralPrice);
        order.setOrderPrice(orderTotalPrice);
        order.setActualPrice(actualPrice);

        // 有团购
        if (grouponRules != null) {
            order.setGrouponPrice(grouponPrice);    //  团购价格
        } else {
            order.setGrouponPrice(new BigDecimal(0));    //  团购价格
        }

        // 添加订单表项
        orderService.add(order);
        orderId = order.getId();

        // 添加订单商品表项
        for (LitemallCart cartGoods : checkedGoodsList) {
            // 订单商品
            LitemallOrderGoods orderGoods = new LitemallOrderGoods();
            orderGoods.setOrderId(order.getId());
            orderGoods.setGoodsId(cartGoods.getGoodsId());
            orderGoods.setGoodsSn(cartGoods.getGoodsSn());
            orderGoods.setProductId(cartGoods.getProductId());
            orderGoods.setGoodsName(cartGoods.getGoodsName());
            orderGoods.setPicUrl(cartGoods.getPicUrl());
            orderGoods.setPrice(cartGoods.getPrice());
            orderGoods.setNumber(cartGoods.getNumber());
            orderGoods.setSpecifications(cartGoods.getSpecifications());
            orderGoods.setAddTime(LocalDateTime.now());

            orderGoodsService.add(orderGoods);
        }

        // 删除购物车里面的商品信息
        if (cartId.equals(0)) {
            cartService.clearGoods(userId);
        } else {
            cartService.deleteById(cartId);
        }

        // 商品货品数量减少
        for (LitemallCart checkGoods : checkedGoodsList) {
            Integer productId = checkGoods.getProductId();
            LitemallGoodsProduct product = productService.findById(productId);

            int remainNumber = product.getNumber() - checkGoods.getNumber();
            if (remainNumber < 0) {
                throw new RuntimeException("下单的商品货品数量大于库存量");
            }
            if (productService.reduceStock(productId, checkGoods.getNumber()) == 0) {
                throw new RuntimeException("商品货品库存减少失败");
            }
        }

        // 如果使用了优惠券，设置优惠券使用状态
        if (couponId != 0 && couponId != -1) {
            LitemallCouponUser couponUser = couponUserService.findById(userCouponId);
            couponUser.setStatus(CouponUserConstant.STATUS_USED);
            couponUser.setUsedTime(LocalDateTime.now());
            couponUser.setOrderId(orderId);
            couponUserService.update(couponUser);
        }

        //如果是团购项目，添加团购信息
        if (grouponRulesId != null && grouponRulesId > 0) {
            LitemallGroupon groupon = new LitemallGroupon();
            groupon.setOrderId(orderId);
            groupon.setStatus(GrouponConstant.STATUS_NONE);
            groupon.setUserId(userId);
            groupon.setRulesId(grouponRulesId);

            //参与者
            if (grouponLinkId != null && grouponLinkId > 0) {
                //参与的团购记录
                LitemallGroupon baseGroupon = grouponService.queryById(grouponLinkId);
                groupon.setCreatorUserId(baseGroupon.getCreatorUserId());
                groupon.setGrouponId(grouponLinkId);
                groupon.setShareUrl(baseGroupon.getShareUrl());
                grouponService.createGroupon(groupon);
            } else {
                groupon.setCreatorUserId(userId);
                groupon.setCreatorUserTime(LocalDateTime.now());
                groupon.setGrouponId(0);
                grouponService.createGroupon(groupon);
                grouponLinkId = groupon.getId();
            }
        }

        // 订单支付超期任务
        taskService.addTask(new OrderUnpaidTask(orderId));

        Map<String, Object> data = new HashMap<>();
        data.put("orderId", orderId);
        if (grouponRulesId != null && grouponRulesId > 0) {
            data.put("grouponLinkId", grouponLinkId);
        } else {
            data.put("grouponLinkId", 0);
        }
        return ResponseUtil.ok(data);
    }

    @Transactional
    public Object actSubmit(Integer userId, String body) {
        try {
            if (userId == null) {
                return ResponseUtil.unlogin();
            }
            if (StringUtils.isBlank(body)) {
                return ResponseUtil.badArgument();
            }

            LitemallUser user = userService.findById(userId);
            //找不到用户
            if (user == null) {
                return ResponseUtil.badArgument();
            }

            Integer activityId = JacksonUtil.parseInteger(body, "activityId");
            Integer subjectId = JacksonUtil.parseInteger(body, "subjectId");
            logger.info(String.format("subjectId=[%s]", subjectId));
            String subject = JacksonUtil.parseString(body, "subject");
            String grouponCode = JacksonUtil.parseString(body, "grouponCode");
            logger.info(String.format("grouponCode=[%s]", grouponCode));
            Integer grouponId = JacksonUtil.parseInteger(body, "grouponId");
            String contactName = JacksonUtil.parseString(body, "contactName");
            String contactPhone = JacksonUtil.parseString(body, "contactPhone");
            String message = JacksonUtil.parseString(body, "message");
            Byte userType = JacksonUtil.parseByte(body, "userType");
            Integer userAge = JacksonUtil.parseInteger(body, "userAge");


            if (activityId == null || StringUtils.isBlank(subject)) {
                return ResponseUtil.badArgument();
            }

            LitemallActivity activity = activityService.queryActivity(activityId, null);
            //找不到活动
            if (activity == null) {
                return ResponseUtil.badArgument();
            }

            //活动未发布
            if (LitemallActivity.StateEnum.TO_BE_ISSUE.getCode().equals(activity.getState())) {
                return ResponseUtil.fail(YET_START, "活动未开始");
            }
            //活动无效
            if (LitemallActivity.StateEnum.TIME_OUT.getCode().equals(activity.getState())
                    || LitemallActivity.StateEnum.STOP_FORCING.getCode().equals(activity.getState())) {
                return ResponseUtil.fail(OFFLINE, "活动已下线!");
            }


            LitemallActivityRules rule = rulesService.findByActivityIdAndSubjectId(activityId, subjectId);
            if (rule == null) {
                return ResponseUtil.badArgument();
            }

            LitemallOrder order;
            // 成团规则
            // 前端有传团编码：参团
            if (StringUtils.isNotBlank(grouponCode) && !"null".equals(grouponCode)) {
                Map<String, Object> grouponReqMap = Maps.newHashMap();
                grouponReqMap.put("grouponCode", grouponCode);
                grouponReqMap.put("activityId", activityId);
                //grouponReqMap.put("subjectId", subjectId);
                grouponReqMap.put("state", LitemallActivityGroupon.StateEnum.SUCCESS.getCode());
                List<LitemallActivityGroupon> groupons = activityGrouponService.findByParams(Collections.singletonList(grouponReqMap));
                if (CollectionUtils.isEmpty(groupons)) {
                    return ResponseUtil.fail(NOT_EXIST, String.format("%s未成团，请联系系统管理员", grouponCode));
                }

                LitemallActivityGroupon captainGroup = groupons.stream().filter(it -> it.getGrouponId().compareTo(0) == 0)
                        .findFirst().orElse(null);
                if (captainGroup == null) {
                    return ResponseUtil.fail(NOT_EXIST, String.format("查询不到[%s]参团团长，请联系系统管理员", grouponCode));
                }

                // 团长的团id
                grouponId = captainGroup.getId();

                // 团长报的科目
                Integer captainSubjectId = captainGroup.getSubjectId();
                LitemallActivityRules captainRule = rulesService.findByActivityIdAndSubjectId(activityId, captainSubjectId);
                if (captainRule == null) {
                    return ResponseUtil.fail(NOT_EXIST, String.format("团长报的科目[%s]查询不到，请联系系统管理员", grouponCode));
                }

                // 目前成团人数是否已满
                int grouponSize = groupons.size();
                Integer limited = captainRule.getLimited();
                if (grouponSize >= limited) {
                    return ResponseUtil.fail(FULL, "该团参与人数已满!");
                }

                // 该用户组建的团/参与的团
                LitemallActivityGroupon grouponInfo = groupons.stream()
                        .filter(it -> it.getUserId().equals(userId.toString())).findFirst().orElse(null);

                // 该用户有参团
                if (grouponInfo != null) {
                    return ResponseUtil.fail(JOINED, "您已参与该团购活动!");
                }
                // 该用户没有参加该团{前端传的grouponCode}，先查用户是否已经参加该科目的其他团，无则参加该团
                else {
                    Map<String, Object> grouponReqMap2 = Maps.newHashMap();
                    grouponReqMap2.put("activityId", activityId);
                    grouponReqMap2.put("subjectId", subjectId);
                    grouponReqMap2.put("userId", userId);
                    List<LitemallActivityGroupon> groupons2 = activityGrouponService.findByParams(Collections.singletonList(grouponReqMap2));
                    // 该用户已经参与该科目的团
                    if (groupons2
                            .stream()
                            .anyMatch(it -> LitemallActivityGroupon.StateEnum.SUCCESS.getCode().equals(it.getState()))) {
                        return ResponseUtil.fail(JOINED, "您已参与该科目的其他团!");
                    }
                    // 该用户没有参与该科目的团
                    else {
                        // 生成订单 and 参与团长的团
                        //先查是否有未超时订单，如果有则用该订单进行支付，不生成新订单（防刷单）
                        LitemallActivityGroupon tobePayGroupon = groupons2
                                .stream()
                                .filter(it -> LitemallActivityGroupon.StateEnum.TOBE_CONFIRM.getCode().equals(it.getState()))
                                .findFirst().orElse(null);
                        if (tobePayGroupon == null) {
                            order = createOrderAndCreateGroupon(rule,
                                    user,
                                    contactPhone,
                                    message,
                                    "",
                                    activityId,
                                    grouponId,
                                    grouponCode,
                                    userType,
                                    userAge,
                                    contactName,
                                    subjectId,
                                    subject);
                        } else {
                            order = orderService.findById(Integer.valueOf(tobePayGroupon.getUserId()), tobePayGroupon.getOrderId());
                        }
                    }
                }
            }
            // 前端没有传grouponCode，先查自己是否已经参加该科目的团，无则新建团
            else {
                Map<String, Object> grouponReqMap = Maps.newHashMap();
                grouponReqMap.put("activityId", activityId);
                grouponReqMap.put("subjectId", subjectId);
                grouponReqMap.put("userId", userId);
                List<LitemallActivityGroupon> groupons = activityGrouponService.findByParams(Collections.singletonList(grouponReqMap));

                // ** 用户未参与团购 **
                if (groupons.stream().noneMatch(it -> LitemallActivityGroupon.StateEnum.SUCCESS.getCode().equals(it.getState()))) {
                    // 生成订单 and 团长建团
                    //先查是否有未超时订单，如果有则用该订单进行支付，不生成新订单（防刷单）
                    LitemallActivityGroupon tobePayGroupon = groupons
                            .stream()
                            .filter(it -> LitemallActivityGroupon.StateEnum.TOBE_CONFIRM.getCode().equals(it.getState()))
                            .findFirst().orElse(null);
                    if (tobePayGroupon == null) {
                        order = createOrderAndCreateGroupon(rule,
                                user,
                                contactPhone,
                                message,
                                "",
                                activityId,
                                null,
                                "",
                                userType,
                                userAge,
                                contactName,
                                subjectId,
                                subject);
                    } else {
                        order = orderService.findById(Integer.valueOf(tobePayGroupon.getUserId()), tobePayGroupon.getOrderId());
                    }
                }
                // 用户已参与团购
                else {
                    return ResponseUtil.fail(JOINED, "您已参与该科目的其他团!");
                }
            }

            // 埋点记录报名数和参团数
            remoteCacheService.cacheStatistics(activityId, (int) LitemallStatistics.BTypeEnum.SING_UP.getCode());

            // 订单支付超期任务
            taskService.addTask(new ActivityOrderUnpaidTask(order.getId()));

            Map<String, Object> data = Maps.newConcurrentMap();
            data.put("orderId", order.getId());
            data.put("actualPrice", order.getActualPrice());
            return ResponseUtil.ok(data);
        } catch (Exception e) {
            e.printStackTrace();
            return ResponseUtil.fail();
        }
    }

    private LitemallOrder createOrderAndCreateGroupon(LitemallActivityRules rule,
                                                      LitemallUser user,
                                                      String contactPhone,
                                                      String message,
                                                      String address,
                                                      Integer activityId,
                                                      Integer grouponId,
                                                      String grouponCode,
                                                      Byte userType,
                                                      Integer userAge,
                                                      String contactName,
                                                      Integer subjectId,
                                                      String subject) {
        // 生成订单
        LitemallOrder order = createActivityOrder(rule, user, contactPhone, message, address);
        // 参与团长的团
        createActivityGroupon(activityId, grouponId, grouponCode, order, userType, user, userAge, contactName, contactPhone, subjectId, subject);
        return order;
    }

    /**
     * 根据原订单是否过期，生成新订单 and 更新团购信息
     *
     * @param grouponInfo
     * @param rule
     * @param user
     * @param contactPhone
     * @param message
     * @param address
     * @return
     */
    private LitemallOrder createOrderAndUpdateGroupon(LitemallActivityGroupon grouponInfo,
                                                      LitemallActivityRules rule,
                                                      LitemallUser user,
                                                      String contactPhone,
                                                      String message,
                                                      String address) {
        LitemallOrder order;
        LitemallOrder dbOrder = orderService.findById(Integer.valueOf(grouponInfo.getUserId()), grouponInfo.getOrderId());
        if (dbOrder != null) {
            // 检查订单是否过期（30分钟）
            LocalDateTime expire = dbOrder.getAddTime().plusMinutes(SystemConfig.getOrderUnpaid());
            LocalDateTime now = LocalDateTime.now();
            if (expire.isBefore(now)) {
                // 已过期生成新订单
                order = createActivityOrder(rule, user, contactPhone, message, address);

                // 更新团购信息
                grouponInfo.setOrderId(order.getId());
                grouponInfo.setOrderPrice(order.getActualPrice());
                grouponInfo.setPayState(LitemallActivityGroupon.PayStateEnum.TOBE_PAY.getCode());
                grouponInfo.setUpdatedBy(user.getId().toString());
                activityGrouponService.updateById(grouponInfo);
            } else {
                // 未过期不需生成新订单，不需更新团购信息
                order = dbOrder;
            }
        } else {
            // 生成新订单
            order = createActivityOrder(rule, user, contactPhone, message, address);

            // 更新团购信息
            grouponInfo.setOrderId(order.getId());
            grouponInfo.setOrderPrice(order.getActualPrice());
            grouponInfo.setPayState(LitemallActivityGroupon.PayStateEnum.TOBE_PAY.getCode());
            grouponInfo.setUpdatedBy(user.getId().toString());
            activityGrouponService.updateById(grouponInfo);
        }
        return order;
    }

    /**
     * 新增团购信息
     *
     * @param activityId
     * @param grouponId
     * @param grouponCode
     * @param order
     * @param userType
     * @param user
     * @param userAge
     * @param contactName
     * @param contactPhone
     * @param subjectId
     * @param subject
     */
    private void createActivityGroupon(Integer activityId,
                                       Integer grouponId,
                                       String grouponCode,
                                       LitemallOrder order,
                                       Byte userType,
                                       LitemallUser user,
                                       Integer userAge,
                                       String contactName,
                                       String contactPhone,
                                       Integer subjectId,
                                       String subject) {
        // 团长建团
        if (grouponId == null) {
            grouponId = 0;
            grouponCode = noGenerator.genActNo(TransNoEnum.AGC);
        }
        LitemallActivityGroupon activityGroupon = new LitemallActivityGroupon();
        activityGroupon.setActivityId(activityId);
        activityGroupon.setOrderId(order.getId());
        activityGroupon.setOrderPrice(order.getActualPrice());
        activityGroupon.setGrouponCode(grouponCode);
        activityGroupon.setGrouponId(grouponId);
        activityGroupon.setUserType(userType);
        activityGroupon.setUserId(user.getId().toString());
        activityGroupon.setUserName(user.getNickname());
        activityGroupon.setUserAge(userAge);
        activityGroupon.setContactName(contactName);
        activityGroupon.setContactPhone(contactPhone);
        activityGroupon.setImage(user.getAvatar());
        activityGroupon.setSubject(subject);
        activityGroupon.setSubjectId(subjectId);
        activityGroupon.setState(LitemallActivityGroupon.StateEnum.TOBE_CONFIRM.getCode());
        activityGroupon.setPayState(LitemallActivityGroupon.PayStateEnum.TOBE_PAY.getCode());
        activityGroupon.setUpdatedBy(user.getId().toString());
        activityGroupon.setCreatedBy(user.getId().toString());
        activityGrouponService.insertActivityGroupon(activityGroupon);
    }

    private LitemallOrder createActivityOrder(LitemallActivityRules rule,
                                              LitemallUser user,
                                              String contactPhone,
                                              String message,
                                              String address) {
        // 团购的课程数量规定是1
        short goodsNum = 1;
        // 团购价
        BigDecimal onsale = rule.getOnsale();
        // 原价
        BigDecimal origin = rule.getOrigin();
        // 提交一次报团，只能选择一个课程；如果要报多个课程，需要提交多次报团并生成多个订单
        // 商品价格（原价）
        BigDecimal goodsPrice = CommonUtils.mul(origin, new BigDecimal(goodsNum), 2);
        // 团购价
        BigDecimal onSalePrice = CommonUtils.mul(onsale, new BigDecimal(goodsNum), 2);
        // 团购优惠价减免
        BigDecimal grouponPrice = CommonUtils.subtract(goodsPrice, onSalePrice);
        Map<String, Object> orderAttr = Maps.newConcurrentMap();
        orderAttr.put("contactPhone", contactPhone);
        orderAttr.put("message", message);
        orderAttr.put("address", address);

        Map<String, BigDecimal> priceAttr = Maps.newConcurrentMap();
        priceAttr.put("goodsPrice", goodsPrice);
        priceAttr.put("grouponPrice", grouponPrice);

        Map<String, Object> goodsAttr = Maps.newConcurrentMap();
        goodsAttr.put("goodsId", rule.getActivityGoodId());
        goodsAttr.put("goodsName", rule.getActivityGoodsName());
        goodsAttr.put("price", goodsPrice);
        goodsAttr.put("number", goodsNum);
        return createOrder(user, orderAttr, priceAttr, goodsAttr);
    }

    private LitemallOrder createOrder(LitemallUser user,
                                      Map<String, Object> orderAttr,
                                      Map<String, BigDecimal> priceAttr,
                                      Map<String, Object> goodsAttr) throws ValidationException {
        if (!priceAttr.containsKey("goodsPrice")) {
            throw new ValidationException("商品总金额不能为空");
        }
        if (!goodsAttr.containsKey("goodsId")) {
            throw new ValidationException("商品id不能为空");
        }
        if (!goodsAttr.containsKey("goodsName")) {
            throw new ValidationException("商品名称不能为空");
        }
        if (!goodsAttr.containsKey("price")) {
            throw new ValidationException("商品单价不能为空");
        }
        if (!goodsAttr.containsKey("number")) {
            throw new ValidationException("商品数量不能为空");
        }

        // 订单
        LitemallOrder order = new LitemallOrder();
        order.setUserId(user.getId());
        order.setOrderSn(noGenerator.genActNo(TransNoEnum.OD));
        order.setOrderStatus(OrderUtil.STATUS_CREATE);
        order.setConsignee(user.getNickname());
        order.setMobile((String) orderAttr.getOrDefault("contactPhone", ""));
        order.setMessage((String) orderAttr.getOrDefault("message", ""));
        order.setAddress((String) orderAttr.getOrDefault("address", ""));

        BigDecimal goodsPrice = priceAttr.get("goodsPrice");
        BigDecimal freightPrice = priceAttr.getOrDefault("freightPrice", BigDecimal.ZERO);
        BigDecimal couponPrice = priceAttr.getOrDefault("couponPrice", BigDecimal.ZERO);
        BigDecimal integralPrice = priceAttr.getOrDefault("integralPrice", BigDecimal.ZERO);
        BigDecimal grouponPrice = priceAttr.getOrDefault("grouponPrice", BigDecimal.ZERO);
        // 订单费用， = goods_price + freight_price - coupon_price
        BigDecimal orderPrice = CommonUtils.subtract(CommonUtils.plus(goodsPrice, freightPrice), couponPrice);
        // 实付费用， = order_price - integral_price - groupon_price
        BigDecimal actualPrice = CommonUtils.subtract(CommonUtils.subtract(orderPrice, integralPrice), grouponPrice);

        order.setGoodsPrice(goodsPrice);
        order.setOrderPrice(orderPrice);
        order.setActualPrice(actualPrice);
        order.setFreightPrice(freightPrice);
        order.setCouponPrice(couponPrice);
        order.setIntegralPrice(integralPrice);
        order.setGrouponPrice(grouponPrice);

        // 添加订单表项
        orderService.add(order);

        // 添加订单商品表项
        LitemallOrderGoods orderGoods = new LitemallOrderGoods();
        orderGoods.setOrderId(order.getId());
        orderGoods.setGoodsId((Integer) goodsAttr.get("goodsId"));
        orderGoods.setGoodsName((String) goodsAttr.get("goodsName"));
        orderGoods.setPrice((BigDecimal) goodsAttr.get("price"));
        orderGoods.setNumber((short) goodsAttr.get("number"));
        orderGoods.setGoodsSn((String) goodsAttr.getOrDefault("goodsSn", ""));
        orderGoods.setProductId((Integer) goodsAttr.getOrDefault("productId", 0));
        orderGoods.setPicUrl((String) goodsAttr.getOrDefault("picUrl", ""));
        orderGoods.setSpecifications((String[]) goodsAttr.getOrDefault("specifications", new String[]{}));

        orderGoodsService.add(orderGoods);
        return order;
    }

    /**
     * 取消订单
     * <p>
     * 1. 检测当前订单是否能够取消；
     * 2. 设置订单取消状态；
     * 3. 商品货品库存恢复；
     * 4. 返还优惠券；
     *
     * @param userId 用户ID
     * @param body   订单信息，{ orderId：xxx }
     * @return 取消订单操作结果
     */
    @Transactional
    public Object cancel(Integer userId, String body) {
        if (userId == null) {
            return ResponseUtil.unlogin();
        }
        Integer orderId = JacksonUtil.parseInteger(body, "orderId");
        if (orderId == null) {
            return ResponseUtil.badArgument();
        }

        LitemallOrder order = orderService.findById(userId, orderId);
        if (order == null) {
            return ResponseUtil.badArgumentValue();
        }
        if (!order.getUserId().equals(userId)) {
            return ResponseUtil.badArgumentValue();
        }

        LocalDateTime preUpdateTime = order.getUpdateTime();

        // 检测是否能够取消
        OrderHandleOption handleOption = OrderUtil.build(order);
        if (!handleOption.isCancel()) {
            return ResponseUtil.fail(ORDER_INVALID_OPERATION, "订单不能取消");
        }

        // 设置订单已取消状态
        order.setOrderStatus(OrderUtil.STATUS_CANCEL);
        order.setEndTime(LocalDateTime.now());
        if (orderService.updateWithOptimisticLocker(order) == 0) {
            throw new RuntimeException("更新数据已失效");
        }

        // 商品货品数量增加
        List<LitemallOrderGoods> orderGoodsList = orderGoodsService.queryByOid(orderId);
        for (LitemallOrderGoods orderGoods : orderGoodsList) {
            Integer productId = orderGoods.getProductId();
            Short number = orderGoods.getNumber();
            if (productService.addStock(productId, number) == 0) {
                throw new RuntimeException("商品货品库存增加失败");
            }
        }

        // 返还优惠券
        releaseCoupon(orderId);

        return ResponseUtil.ok();
    }

    /**
     * 付款订单的预支付会话标识
     * <p>
     * 1. 检测当前订单是否能够付款
     * 2. 微信商户平台返回支付订单ID
     * 3. 设置订单付款状态
     *
     * @param userId 用户ID
     * @param body   订单信息，{ orderId：xxx }
     * @return 支付订单ID
     */
    @Transactional
    public Object prepay(Integer userId, String body, HttpServletRequest request) {
        if (userId == null) {
            return ResponseUtil.unlogin();
        }
        Integer orderId = JacksonUtil.parseInteger(body, "orderId");
        if (orderId == null) {
            return ResponseUtil.badArgument();
        }

        LitemallOrder order = orderService.findById(userId, orderId);
        if (order == null) {
            return ResponseUtil.badArgumentValue();
        }
        if (!order.getUserId().equals(userId)) {
            return ResponseUtil.badArgumentValue();
        }

        // 检测是否能够取消
        OrderHandleOption handleOption = OrderUtil.build(order);
        if (!handleOption.isPay()) {
            return ResponseUtil.fail(ORDER_INVALID_OPERATION, "订单不能支付");
        }

        LitemallUser user = userService.findById(userId);
        String openid = user.getWeixinOpenid();
        if (openid == null) {
            return ResponseUtil.fail(AUTH_OPENID_UNACCESS, "订单不能支付");
        }
        WxPayMpOrderResult result = null;
        try {
            WxPayUnifiedOrderRequest orderRequest = new WxPayUnifiedOrderRequest();
            orderRequest.setOutTradeNo(order.getOrderSn());
            orderRequest.setOpenid(openid);
            orderRequest.setBody("订单：" + order.getOrderSn());
            // 元转成分
            int fee = 0;
            BigDecimal actualPrice = order.getActualPrice();
            fee = actualPrice.multiply(new BigDecimal(100)).intValue();
            orderRequest.setTotalFee(fee);
            orderRequest.setSpbillCreateIp(IpUtil.getIpAddr(request));

            result = wxPayService.createOrder(orderRequest);
        } catch (Exception e) {
            e.printStackTrace();
            return ResponseUtil.fail(ORDER_PAY_FAIL, "订单不能支付");
        }

        if (orderService.updateWithOptimisticLocker(order) == 0) {
            return ResponseUtil.updatedDateExpired();
        }
        return ResponseUtil.ok(result);
    }

    /**
     * 微信H5支付
     *
     * @param userId
     * @param body
     * @param request
     * @return
     */
    @Transactional
    public Object h5pay(Integer userId, String body, HttpServletRequest request) {
        if (userId == null) {
            return ResponseUtil.unlogin();
        }
        Integer orderId = JacksonUtil.parseInteger(body, "orderId");
        if (orderId == null) {
            return ResponseUtil.badArgument();
        }

        LitemallOrder order = orderService.findById(userId, orderId);
        if (order == null) {
            return ResponseUtil.badArgumentValue();
        }
        if (!order.getUserId().equals(userId)) {
            return ResponseUtil.badArgumentValue();
        }

        // 检测是否能够取消
        OrderHandleOption handleOption = OrderUtil.build(order);
        if (!handleOption.isPay()) {
            return ResponseUtil.fail(ORDER_INVALID_OPERATION, "订单不能支付");
        }

        WxPayMwebOrderResult result = null;
        try {
            WxPayUnifiedOrderRequest orderRequest = new WxPayUnifiedOrderRequest();
            orderRequest.setOutTradeNo(order.getOrderSn());
            orderRequest.setTradeType("MWEB");
            orderRequest.setBody("订单：" + order.getOrderSn());
            // 元转成分
            int fee = 0;
            BigDecimal actualPrice = order.getActualPrice();
            fee = actualPrice.multiply(new BigDecimal(100)).intValue();
            orderRequest.setTotalFee(fee);
            orderRequest.setSpbillCreateIp(IpUtil.getIpAddr(request));

            result = wxPayService.createOrder(orderRequest);

        } catch (Exception e) {
            e.printStackTrace();
        }

        return ResponseUtil.ok(result);
    }

    /**
     * 微信付款成功或失败回调接口
     * <p>
     * 1. 检测当前订单是否是付款状态;
     * 2. 设置订单付款成功状态相关信息;
     * 3. 响应微信商户平台.
     *
     * @param request  请求内容
     * @param response 响应内容
     * @return 操作结果
     */
    @Transactional
    public Object payNotify(HttpServletRequest request, HttpServletResponse response) {
        String xmlResult = null;
        try {
            xmlResult = IOUtils.toString(request.getInputStream(), request.getCharacterEncoding());
        } catch (IOException e) {
            e.printStackTrace();
            return WxPayNotifyResponse.fail(e.getMessage());
        }

        WxPayOrderNotifyResult result = null;
        try {
            result = wxPayService.parseOrderNotifyResult(xmlResult);

            if (!WxPayConstants.ResultCode.SUCCESS.equals(result.getResultCode())) {
                logger.error(xmlResult);
                throw new WxPayException("微信通知支付失败！");
            }
            if (!WxPayConstants.ResultCode.SUCCESS.equals(result.getReturnCode())) {
                logger.error(xmlResult);
                throw new WxPayException("微信通知支付失败！");
            }
        } catch (WxPayException e) {
            e.printStackTrace();
            return WxPayNotifyResponse.fail(e.getMessage());
        }

        logger.info("处理腾讯支付平台的订单支付");
        logger.info(result);

        String orderSn = result.getOutTradeNo();
        String payId = result.getTransactionId();

        // 分转化成元
        String totalFee = BaseWxPayResult.fenToYuan(result.getTotalFee());
        LitemallOrder order = orderService.findBySn(orderSn);
        if (order == null) {
            return WxPayNotifyResponse.fail("订单不存在 sn=" + orderSn);
        }

        // 检查这个订单是否已经处理过
        if (OrderUtil.hasPayed(order)) {
            return WxPayNotifyResponse.success("订单已经处理成功!");
        }

        // 检查支付订单金额
        if (!totalFee.equals(order.getActualPrice().toString())) {
            return WxPayNotifyResponse.fail(order.getOrderSn() + " : 支付金额不符合 totalFee=" + totalFee);
        }

        order.setPayId(payId);
        order.setPayTime(LocalDateTime.now());
        order.setOrderStatus(OrderUtil.STATUS_PAY);
        if (orderService.updateWithOptimisticLocker(order) == 0) {
            return WxPayNotifyResponse.fail("更新数据已失效");
        }

        //  支付成功，有团购信息，更新团购信息
        LitemallGroupon groupon = grouponService.queryByOrderId(order.getId());
        if (groupon != null) {
            LitemallGrouponRules grouponRules = grouponRulesService.findById(groupon.getRulesId());

            //仅当发起者才创建分享图片
            if (groupon.getGrouponId() == 0) {
                String url = qCodeService.createGrouponShareImage(grouponRules.getGoodsName(), grouponRules.getPicUrl(), groupon);
                groupon.setShareUrl(url);
            }
            groupon.setStatus(GrouponConstant.STATUS_ON);
            if (grouponService.updateById(groupon) == 0) {
                return WxPayNotifyResponse.fail("更新数据已失效");
            }


            List<LitemallGroupon> grouponList = grouponService.queryJoinRecord(groupon.getGrouponId());
            if (groupon.getGrouponId() != 0 && (grouponList.size() >= grouponRules.getDiscountMember() - 1)) {
                for (LitemallGroupon grouponActivity : grouponList) {
                    grouponActivity.setStatus(GrouponConstant.STATUS_SUCCEED);
                    grouponService.updateById(grouponActivity);
                }

                LitemallGroupon grouponSource = grouponService.queryById(groupon.getGrouponId());
                grouponSource.setStatus(GrouponConstant.STATUS_SUCCEED);
                grouponService.updateById(grouponSource);
            }
        }

        LitemallActivityGroupon activityGroupon = activityGrouponService.findByOrderId(order.getId());
        if (activityGroupon != null) {
            activityGroupon.setPayState(LitemallActivityGroupon.PayStateEnum.SUCCESS.getCode());
            activityGroupon.setState(LitemallActivityGroupon.StateEnum.SUCCESS.getCode());
            activityGrouponService.updateById(activityGroupon);
            remoteCacheService.cacheStatistics(activityGroupon.getActivityId(), (int) LitemallStatistics.BTypeEnum.GROUPON.getCode());
        }

        //TODO 发送邮件和短信通知，这里采用异步发送
        // 订单支付成功以后，会发送短信给用户，以及发送邮件给管理员
        notifyService.notifyMail("新订单通知", order.toString());
        // 这里微信的短信平台对参数长度有限制，所以将订单号只截取后6位
        notifyService.notifySmsTemplateSync(order.getMobile(), NotifyType.PAY_SUCCEED, new String[]{orderSn.substring(8, 14)});

        // 请依据自己的模版消息配置更改参数
        String[] parms = new String[]{
                order.getOrderSn(),
                order.getOrderPrice().toString(),
                DateTimeUtil.localDateTime2String(order.getAddTime(), DateTimeUtil.DEFAULT_PATTERN_CN),
                order.getConsignee(),
                order.getMobile(),
                order.getAddress()
        };

        if (activityGroupon != null) {
            // 取消订单超时未支付任务
            taskService.removeTask(new ActivityOrderUnpaidTask(order.getId()));
        } else {
            // 取消订单超时未支付任务
            taskService.removeTask(new OrderUnpaidTask(order.getId()));
        }

        return WxPayNotifyResponse.success("处理成功!");
    }

    /**
     * 订单申请退款
     * <p>
     * 1. 检测当前订单是否能够退款；
     * 2. 设置订单申请退款状态。
     *
     * @param userId 用户ID
     * @param body   订单信息，{ orderId：xxx }
     * @return 订单退款操作结果
     */
    public Object refund(Integer userId, String body) {
        if (userId == null) {
            return ResponseUtil.unlogin();
        }
        Integer orderId = JacksonUtil.parseInteger(body, "orderId");
        if (orderId == null) {
            return ResponseUtil.badArgument();
        }

        LitemallOrder order = orderService.findById(userId, orderId);
        if (order == null) {
            return ResponseUtil.badArgument();
        }
        if (!order.getUserId().equals(userId)) {
            return ResponseUtil.badArgumentValue();
        }

        OrderHandleOption handleOption = OrderUtil.build(order);
        if (!handleOption.isRefund()) {
            return ResponseUtil.fail(ORDER_INVALID_OPERATION, "订单不能取消");
        }

        // 设置订单申请退款状态
        order.setOrderStatus(OrderUtil.STATUS_REFUND);
        if (orderService.updateWithOptimisticLocker(order) == 0) {
            return ResponseUtil.updatedDateExpired();
        }

        //TODO 发送邮件和短信通知，这里采用异步发送
        // 有用户申请退款，邮件通知运营人员
        notifyService.notifyMail("退款申请", order.toString());

        return ResponseUtil.ok();
    }

    /**
     * 确认收货
     * <p>
     * 1. 检测当前订单是否能够确认收货；
     * 2. 设置订单确认收货状态。
     *
     * @param userId 用户ID
     * @param body   订单信息，{ orderId：xxx }
     * @return 订单操作结果
     */
    public Object confirm(Integer userId, String body) {
        if (userId == null) {
            return ResponseUtil.unlogin();
        }
        Integer orderId = JacksonUtil.parseInteger(body, "orderId");
        if (orderId == null) {
            return ResponseUtil.badArgument();
        }

        LitemallOrder order = orderService.findById(userId, orderId);
        if (order == null) {
            return ResponseUtil.badArgument();
        }
        if (!order.getUserId().equals(userId)) {
            return ResponseUtil.badArgumentValue();
        }

        OrderHandleOption handleOption = OrderUtil.build(order);
        if (!handleOption.isConfirm()) {
            return ResponseUtil.fail(ORDER_INVALID_OPERATION, "订单不能确认收货");
        }

        Short comments = orderGoodsService.getComments(orderId);
        order.setComments(comments);

        order.setOrderStatus(OrderUtil.STATUS_CONFIRM);
        order.setConfirmTime(LocalDateTime.now());
        if (orderService.updateWithOptimisticLocker(order) == 0) {
            return ResponseUtil.updatedDateExpired();
        }
        return ResponseUtil.ok();
    }

    /**
     * 删除订单
     * <p>
     * 1. 检测当前订单是否可以删除；
     * 2. 删除订单。
     *
     * @param userId 用户ID
     * @param body   订单信息，{ orderId：xxx }
     * @return 订单操作结果
     */
    public Object delete(Integer userId, String body) {
        if (userId == null) {
            return ResponseUtil.unlogin();
        }
        Integer orderId = JacksonUtil.parseInteger(body, "orderId");
        if (orderId == null) {
            return ResponseUtil.badArgument();
        }

        LitemallOrder order = orderService.findById(userId, orderId);
        if (order == null) {
            return ResponseUtil.badArgument();
        }
        if (!order.getUserId().equals(userId)) {
            return ResponseUtil.badArgumentValue();
        }

        OrderHandleOption handleOption = OrderUtil.build(order);
        if (!handleOption.isDelete()) {
            return ResponseUtil.fail(ORDER_INVALID_OPERATION, "订单不能删除");
        }

        // 订单order_status没有字段用于标识删除
        // 而是存在专门的delete字段表示是否删除
        orderService.deleteById(orderId);
        // 售后也同时删除
        aftersaleService.deleteByOrderId(userId, orderId);

        return ResponseUtil.ok();
    }

    /**
     * 待评价订单商品信息
     *
     * @param userId  用户ID
     * @param orderId 订单ID
     * @param goodsId 商品ID
     * @return 待评价订单商品信息
     */
    public Object goods(Integer userId, Integer orderId, Integer goodsId) {
        if (userId == null) {
            return ResponseUtil.unlogin();
        }
        LitemallOrder order = orderService.findById(userId, orderId);
        if (order == null) {
            return ResponseUtil.badArgument();
        }

        List<LitemallOrderGoods> orderGoodsList = orderGoodsService.findByOidAndGid(orderId, goodsId);
        int size = orderGoodsList.size();

        Assert.state(size < 2, "存在多个符合条件的订单商品");

        if (size == 0) {
            return ResponseUtil.badArgumentValue();
        }

        LitemallOrderGoods orderGoods = orderGoodsList.get(0);
        return ResponseUtil.ok(orderGoods);
    }

    /**
     * 评价订单商品
     * <p>
     * 确认商品收货或者系统自动确认商品收货后7天内可以评价，过期不能评价。
     *
     * @param userId 用户ID
     * @param body   订单信息，{ orderId：xxx }
     * @return 订单操作结果
     */
    public Object comment(Integer userId, String body) {
        if (userId == null) {
            return ResponseUtil.unlogin();
        }

        Integer orderGoodsId = JacksonUtil.parseInteger(body, "orderGoodsId");
        if (orderGoodsId == null) {
            return ResponseUtil.badArgument();
        }
        LitemallOrderGoods orderGoods = orderGoodsService.findById(orderGoodsId);
        if (orderGoods == null) {
            return ResponseUtil.badArgumentValue();
        }
        Integer orderId = orderGoods.getOrderId();
        LitemallOrder order = orderService.findById(userId, orderId);
        if (order == null) {
            return ResponseUtil.badArgumentValue();
        }
        Short orderStatus = order.getOrderStatus();
        if (!OrderUtil.isConfirmStatus(order) && !OrderUtil.isAutoConfirmStatus(order)) {
            return ResponseUtil.fail(ORDER_INVALID_OPERATION, "当前商品不能评价");
        }
        if (!order.getUserId().equals(userId)) {
            return ResponseUtil.fail(ORDER_INVALID, "当前商品不属于用户");
        }
        Integer commentId = orderGoods.getComment();
        if (commentId == -1) {
            return ResponseUtil.fail(ORDER_COMMENT_EXPIRED, "当前商品评价时间已经过期");
        }
        if (commentId != 0) {
            return ResponseUtil.fail(ORDER_COMMENTED, "订单商品已评价");
        }

        String content = JacksonUtil.parseString(body, "content");
        Integer star = JacksonUtil.parseInteger(body, "star");
        if (star == null || star < 0 || star > 5) {
            return ResponseUtil.badArgumentValue();
        }
        Boolean hasPicture = JacksonUtil.parseBoolean(body, "hasPicture");
        List<String> picUrls = JacksonUtil.parseStringList(body, "picUrls");
        if (hasPicture == null || !hasPicture) {
            picUrls = new ArrayList<>(0);
        }

        // 1. 创建评价
        LitemallComment comment = new LitemallComment();
        comment.setUserId(userId);
        comment.setType((byte) 0);
        comment.setValueId(orderGoods.getGoodsId());
        comment.setStar(star.shortValue());
        comment.setContent(content);
        comment.setHasPicture(hasPicture);
        comment.setPicUrls(picUrls.toArray(new String[]{}));
        commentService.save(comment);

        // 2. 更新订单商品的评价列表
        orderGoods.setComment(comment.getId());
        orderGoodsService.updateById(orderGoods);

        // 3. 更新订单中未评价的订单商品可评价数量
        Short commentCount = order.getComments();
        if (commentCount > 0) {
            commentCount--;
        }
        order.setComments(commentCount);
        orderService.updateWithOptimisticLocker(order);

        return ResponseUtil.ok();
    }

    /**
     * 取消订单/退款返还优惠券
     * <br/>
     *
     * @param orderId
     * @return void
     * @author Tyson
     * @date 2020/6/8/0008 1:41
     */
    public void releaseCoupon(Integer orderId) {
        List<LitemallCouponUser> couponUsers = couponUserService.findByOid(orderId);
        for (LitemallCouponUser couponUser : couponUsers) {
            // 优惠券状态设置为可使用
            couponUser.setStatus(CouponUserConstant.STATUS_USABLE);
            couponUser.setUpdateTime(LocalDateTime.now());
            couponUserService.update(couponUser);
        }
    }
}